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Theorem ls-forward

⊦ r * r0 < r * r2 → r ≠ 0.r

Type: A user defined theorem
Validity: The proof is valid.
Features: forward, localforward,
Comment:
Used by: est-nle, le-abs, ls-neg, ls-pos, mult-gt-both, ple-pos-better, pls-pos, pls-pos-01, pls-pos-02, pnle-pos, pnls-negpos, pnls-pos, pnls-posneg, square-le,
Used by units in proved state:
Proof exists?: Yes

View the proof

Infos about the proof

Proved?: Yes
Interactions: 0
Proof steps: 2
Used lemmas: mult-com, mult-ass, mult-zero,
Used spec theorems:
- Used simplifier rules:
  - real-basic/ls-num